Direct evidence of anomalous Cu-O vibrational modes near /ital T//sub /ital c// in ErBa/sub 2/Cu/sub 3/O/sub 7/minus//delta//
Journal Article
·
· Phys. Rev. Lett.; (United States)
Ion channeling along the /ital c/ axis in ErBa/sub 2/Cu/sub 3/O/sub 7/minus//delta// reveals a normal (Debye-type) temperature dependence for thermal vibrations of the Er and Ba atoms between 40 and 300 K. In contrast, a substantially stronger than normal temperature dependence is found for the Cu-O atom vibrations, and a large, anomalous change (/similar to/30%) is seen at the superconducting transition. The large magnitude of the vibrational changes found for the Cu-O rows across /ital T//sub /ital c// suggests that the atoms in these rows become strongly coupled in the superconducting state.
- Research Organization:
- Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439 (US)
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 5676690
- Journal Information:
- Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 62:24; ISSN PRLTA
- Country of Publication:
- United States
- Language:
- English
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Journal Article
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Wed Nov 30 23:00:00 EST 1994
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·
OSTI ID:7180263
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Thu Oct 31 23:00:00 EST 1996
· Physical Review Letters
·
OSTI ID:402522
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Journal Article
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Mon Mar 31 23:00:00 EST 1997
· Journal of Applied Physics
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OSTI ID:496531
Related Subjects
36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
CHANNELING
COPPER COMPOUNDS
COPPER OXIDES
DEBYE TEMPERATURE
ENERGY LEVELS
ERBIUM COMPOUNDS
ERBIUM OXIDES
EXCITED STATES
ION CHANNELING
LOW TEMPERATURE
MEDIUM TEMPERATURE
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
RARE EARTH COMPOUNDS
TEMPERATURE DEPENDENCE
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE
VERY LOW TEMPERATURE
VIBRATIONAL STATES
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
CHANNELING
COPPER COMPOUNDS
COPPER OXIDES
DEBYE TEMPERATURE
ENERGY LEVELS
ERBIUM COMPOUNDS
ERBIUM OXIDES
EXCITED STATES
ION CHANNELING
LOW TEMPERATURE
MEDIUM TEMPERATURE
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
RARE EARTH COMPOUNDS
TEMPERATURE DEPENDENCE
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE
VERY LOW TEMPERATURE
VIBRATIONAL STATES